Pb - Lead

A toxic heavy metal. Its malleability has been lead's greatest virtue as it has been used since ancient times for containers and water pipes. Our students investigate the density, reactivity and electrochemistry of lead.

Atomic number - 82 Density g/mL 11 .4
Atomic weight u 207 .2 Melting point K 600 .6
Bonding radius A 1 .47 Boiling point K 2023
Atomic radius A 1 .81 Heat of vaporization kJ/mol 177 .7
Ionization Potential V 7 .416 Heat of fusion kJ/mol 4 .799
Electronegativity - 2 .33 Specific heat J/gK 0 .13
The oxide is amphoteric.
Crystal are face centered cubic.

Electron config. : [Xe] 4f14 5d10 6s2 6p2


Isotopes of Pb: Click mass number for decay process, product for element page.

 
181
45 msec
a/EC,7.370
Hg-177/Tl-181
180.99685
182
55 msec
a,7.076 MeV
Hg-178
181.99267
183
300 msec
a/EC,7.030
Hg-179/Tl-183
182.99194
184
0.55 sec
a/EC,6.775
Hg-180/Tl-184
183.98820
185
4.1 sec
a,6.680 MeV
Hg-181
184.98754
186
4.7 sec
a,6.471 MeV
Hg-182
185.98432
187
18.3 sec
a/EC,7.200
Hg-183/Tl-187
186.98389
188
24.2 sec
a/EC,4.800
Hg-184/Tl-188
187.98106
189
51 sec
a/EC,6.700
Hg-185/Tl-189
188.98089
190
1.2 min
a/EC,4.100
Hg-186/Tl-190
189.97817
191
1.33 min
a/EC,5.900
Hg-187/Tl-191
190.97819
192
3.5 min
a/EC,3.400
Hg-188/Tl-192
191.97575
193

EC,5.200 MeV
Tl-193
192.97608
194
12.0 min
a/EC,2.700
Hg-190/Tl-194
193.97396
195
15 min
EC,4.500 MeV
Tl-195
194.97444
196
37 min
a/EC,2.050
Hg-192/Tl-196
195.97271
197
8 min
EC,3.580 MeV
Tl-197
196.97337
198
2.40 hr
EC,1.410 MeV
Tl-198
197.97198
199
90 min
EC,2.880 MeV
Tl-199
198.97290
200
21.5 hr
EC,2.456 MeV
Tl-200
199.97181
201
9.33 hr
EC,1.900 MeV
Tl-201
200.97285
201a
61 sec
EC,2.529 MeV
Tl-201
200.97352
202
52.5E+3 yr
a/EC,1.364
Hg-198/Tl-202
201.97214
203
51.873 hr
EC,2.139 MeV
Tl-203
202.97337
204 1.4%
1.4E+17 yr
a,3.800 MeV
Hg-200
203.97302
205
1.53E+7 yr
EC,1.531 MeV
Tl-205
204.97446
206 24.1%

Stable

205.97444
207 22.1%

Stable

206.97588
208 52.4%

Stable

207.97663
209
3.253 hr
B-,3.980 MeV
Bi-209
208.98107
210
22.3 yr
a/B-,5.484
Hg-206/Bi-210
209.98417
211
36.1 min
B-,1.373 MeV
Bi-211
210.98873
212
10.64 hr
B-,5.965 MeV
Bi-212
211.99188
213
10.2 min
B-,2.070 MeV
Bi-213
212.99659
214
26.8 min
B-,1.024 MeV
Bi-214
213.99979
MASS abund.
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass